Effect of Particle Size on the Photocatalytic Activity of Nanoparticulate Zinc Oxide

Dodd, Aaron; McKinley, Allan J.; Saunders, Martin; Tsuzuki, Takuya

doi:10.1007/s11051-005-5131-z

Cited by 241 publications

(149 citation statements)

References 12 publications

Supporting

Mentioning

141

Contrasting

Order By: Relevance

“…Therefore, ZnO nanostructures with diverse morphologies like nanowire (Huang et al 2001), nanobelt (Pan et al 2001), ellipsoidal Xie et al 2006;Pu et al 2007), flower like (Tanner and Yu 2008), tube like (Yu et al 2005) have been successfully synthesized. Effects of morphology and particle size on the photocatalytic activity of ZnO have also been studied and reported in the literature (Wang et al 2007a, b;Jing et al 2005;Dodd et al 2006). For example, Jing et al studied ZnO nanoparticles with three different sizes (14, 19, 26 nm) prepared by precipitation process.…”

Section: Introductionmentioning

confidence: 99%

“…High surface oxygen vacancies, higher ESR intensity, stronger PL signal, and higher photocatalytic activity was observed for the smaller sized ZnO nanoparticles (Jing et al 2005). Dodd et al (2006) reported the synthesis of ZnO nanoparticles within 28-57 nm range by mechanical milling and heat treatment with maximum photocatalytic activity for 33 nm sized ZnO particle. Li et al (2005) also obtained ZnO nanoparticles with average sizes 21-90 nm by varying the calcinations temperature between 200 and 1,000°C and found that prismatic aggregated obtained by calcination at 800°C demonstrated the highest photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

et al. 2013

View full text Add to dashboard Cite

In the present study, ZnO nanostructures have been successfully synthesized by hydrothermal, sonochemical and precipitation methods using polyvinyl pyrrolidone (PVP) as the capping agent. The ZnO nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-Visible spectroscopy and photoluminescence (PL) techniques. The XRD results revealed the hexagonal wurtzite structure of the ZnO nanostructures for all the samples. Furthermore, the morphology of the ZnO particles was obtained from FESEM micrographs. Particles prepared by hydrothermal method were found to be rice grain shaped and that prepared by precipitation and sonochemical methods were spherical shaped. Sunlight driven photocatalytic degradation of methylene blue (MB) was studied for ZnO nanostructures synthesized by various methods. The ZnO nanostructures were further decorated with Ag nanoparticles to enhance its dye degradation efficiency. The Ag decorated ZnO nanoparticles exhibited a higher degradation rate as compared to pure ZnO nanoparticles which was independent of pH. Since this process of dye degradation relies on the degradation of dye due to oxidation by highly reactive hydroxyl radicals, there are many factors which affect the efficiency of this process. Hence a study was conducted on the effect of various parameters on ZnO viz amount of catalyst, reaction pH and concentration of MB dye.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

et al. 2013

View full text Add to dashboard Cite

show abstract

“…ZnO has been found to reduce the activity of wide range of bacteria [10,11]. With the use of NPs the antibacterial property increased significantly [12][13][14]. The precise mechanism of antibacterial action is not yet understood, but four mechanisms have been hypothesized as illustrated in Figure 2.…”

Section: Antibacterial Propertymentioning

confidence: 99%

Zinc Oxide Nanoparticles: Opportunities and Challenges in Veterinary Sciences

Manuja¹

2015

Immunome Res

View full text Add to dashboard Cite

Nanotechnology has opened up new vistas for applications in almost all the disciplines of veterinary and animal sciences. Zinc oxide (ZnO) has been used as an alternative to antibiotics in animal feed. It has also been widely used for wound healing and various skin disorders. Recently ZnO nanoparticles (NPs) have attracted attention owing to their unique features. There can be numerous applications of ZnO NPs due to their antibacterial, antineoplastic, wound healing, ultraviolet scattering and angiogenic properties. These have also been used to promote tissue repair, as a food preservative and as feed additive. This paper reviews the recent developments in ZnO NPs research and its potential for application in animal health and production.

show abstract

“…In order to consider the size and shape of NPs, decreasing factors, etc., have been used in the preparation of NPs [18]. The most of important dramatical feature of Zno nanoparticles is their small size and large surface area of the material that cause to increase the chemical and biological properties and the antimicrobial activities [19]. Zno nanoparticles have catalytic, magnetic, optical and biological (antimicrobial) properties Among nanoparticles, ZnO nanoparticles attract the researchers's attention for having specific chemo-physical properties [20].…”

Section: Introductionmentioning

confidence: 99%

The Antibacterial Effects of Zno Nanoparticles on Patients with Urinary Tract Infection Isolated From Alzahra Hospital in Isfahan, Iran

Torabi

2017

Zahedan J Res Med Sci

View full text Add to dashboard Cite

Background: Urinary tract infection (UTI) is a kind of disease in kidneys that often caused by Escherichia coli bacteria, especially in women. Objectives: We studied the antibacterial effects of ZnO nanoparticles On patients with urinary tract infection that isolated from Alzahra hospital in Isfahan, Iran. It is hoped that by the research community's attention to this great problem of multi drug resistance E. coli treatment by ZnO NPs. Methods: In this experimental study, urine samples of multi drug resistance E. coli bacteria, Also colloidal ZnO nanoparticles prepared in size 20 nm, spherical shape and a concentration of 200 ppm were used .The methods of research were wells and disk agar diffusion in nutriant agar & LB medium and was evaluated antibacterial properties of the nanoparticles ,then incubated for 72 hours and the diameter of inhibitory zone of growth was measured, The data were analyzed by spss 16 version software. Results: The highest resistance of E. coli to antibiotics belongs to cefazolin and cefexime. The results showed that ZnO NPs in size 20 nm and spherical shape after 72 hours at 37°C can be used to treat Urinary infections caused by E. coli, it is recommended that further research considered the effects of different infections of Urinary tract infection in In vitro condition. Conclusions: Using ZnO nanoparticles with 20 nm diameters have acceptable antibacterial effect on Escherichia coli isolated from Urinary tract infection. The current study suggests that ZnO NPs could be a good candidate for an effective antibacterial agent against E. coli.

show abstract

Effect of Particle Size on the Photocatalytic Activity of Nanoparticulate Zinc Oxide

Cited by 241 publications

References 12 publications

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

Zinc Oxide Nanoparticles: Opportunities and Challenges in Veterinary Sciences

The Antibacterial Effects of Zno Nanoparticles on Patients with Urinary Tract Infection Isolated From Alzahra Hospital in Isfahan, Iran

Contact Info

Product

Resources

About